Our Orion Hydrgon-Beta filters help backyard astronomers to see faint and elusive nebulas such as the Horsehead, California, and Cocoon Nebulas. These filters block everything but the hydrogen-beta light that these and some other faint nebulas emit, providing the contrast needed to observe them through a telescope. By isolating the hydrogen-beat spectral line centered at 468.1 nanometers (nm) in a 12nm band-pass while blocking other wavelengths, these filters effectively blacken the background sky, allowing the faint nebula to become clearly defined for visual study. Not recommended for astrophotographic use.

Warranty
Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only. For complete warranty details contact us at 800-676-1343.

Warning

Please note this product was not designed or intended by the manufacturer for use by a child 12 years of age or younger.

Orion Oxygen-III filters show amazing detail when viewing nebulae. Completely blocks all other visible wavelengths to boost contrast on emission and planetary nebulae as well as supernova remnants. A bigger contrast boost than the UltraBlock filters.

For highly light-polluted sites, the UltraBlock Narrowband Light-Pollution Filters are perfect. They block all forms of light pollution, allowing you to see fainter deep-sky celestial objects over unfiltered and wideband-filtered views.

SkyGlow Broadband filters enhance deep-sky objects in moderately light polluted skies. They block the most common wavelengths of light pollution for increased contrast and better views of all deep-sky objects, without needing to drive to dark skies.

For cleaning the lenses in your telescope or binocular, the Orion Microfiber Optics Cleaning Cloth lifts dirt, fingerprints, water and oil from surface without scratching, streaking or smearing delicate lens surfaces. The cloth is machine washable.

At Orion, we are committed to sharing our knowledge and passion for astronomy and astrophotography with the amateur astronomy community. Visit the Orion Community Center for in-depth information on telescopes, binoculars, and astrophotography. You can find astrophotography "how to" tips and share your best astronomy pictures here. Submit astronomy articles, events, and reviews, and even become a featured Orion customer!